383 or 402
01-03-2008, 06:28 PM
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383 or 402 I am debating to put a 383 or 402 stroker in my 98 trans am... i need ur guys opinion of wat u think of both of them and which one is better... and i dunno if i should do low compression or high compression ....
i am a beginner so ur guys opinion and information that u know of would help..
i am a beginner so ur guys opinion and information that u know of would help..
01-03-2008, 07:04 PM
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you want tq or more hp? the 383 will make the same power as a bad *** heads/cam car but with matching tq numbers. the 402 will make crazy power, because more cubes are always better.
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01-03-2008, 08:33 PM
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2000 Z28 with aftermarket Sunoco hood and SS rear spoiler, Blk-in/Blk-out
Forged 383 (150-200 miles on new motor)
Fresh T56 conversion w/ Pro 50 shifter w/ brand new slave cylinder
Heads + Cam
Pacesetter LTs
Speck stage 3 clutch
McLeoud adjustable Master Cyclinder
SLP Underdrive Pulley
Smooth Bellows
Racetronic Fuel system
Larger injectors
Dyno Tune
Curently sporting an LS1 intake but made 452 RWHP on the dyno w/ a carb style intake.
Oil Catch Can
I'm actually the one in charge of selling this car now for Strictly Performance Motorsports so please contact me if seriously interested. Contact me for photographs plz! Need to wait for better light to snap some pics!
P.S. ... TESTING THE WATERS, THROW ME SOME OFFERS AND WE'LL WORK OUT THE PRICE!
'MILKY'
Forged 383 (150-200 miles on new motor)
Fresh T56 conversion w/ Pro 50 shifter w/ brand new slave cylinder
Heads + Cam
Pacesetter LTs
Speck stage 3 clutch
McLeoud adjustable Master Cyclinder
SLP Underdrive Pulley
Smooth Bellows
Racetronic Fuel system
Larger injectors
Dyno Tune
Curently sporting an LS1 intake but made 452 RWHP on the dyno w/ a carb style intake.
Oil Catch Can
I'm actually the one in charge of selling this car now for Strictly Performance Motorsports so please contact me if seriously interested. Contact me for photographs plz! Need to wait for better light to snap some pics!
P.S. ... TESTING THE WATERS, THROW ME SOME OFFERS AND WE'LL WORK OUT THE PRICE!
'MILKY'
01-03-2008, 08:47 PM
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Is it a Daily Driver? If so a 383 would do you right. 383's do sound alot meaner than a 346.
If it's a part time driver, go with the 402. It will make a considerable amount of power over the 383, but that power will come with a penalty at the pump.
If it's a part time driver, go with the 402. It will make a considerable amount of power over the 383, but that power will come with a penalty at the pump.
01-04-2008, 03:53 PM
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thanks djsanchez thats actually the information i was basically looking for.. and yea it is a daily driver at least till i get my self a bike or a small car...
01-05-2008, 05:45 AM
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you can't go wrong either way. if you're looking to get boosted down the road i'd go with low compression. staying naturally aspirated? go high compression. i went with a 402 and my only regret is that i didn't get more cubes. you won't be disappointed with the power or the sound.
01-05-2008, 06:41 AM
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The 408/402 can be built as mild or as wild as you like. It can be setup to idle like stock or idle like a Prostocker with an 7800 redline if you prefer.... The larger cube setup will allow you to run a more radical setup and keep it streetable by having more cubic inches to absorb the added duration of the cam.
Assuming all other components are equal (Compression, Cam size, Heads, etc...) the 408/2 and will almost always make slighly more power and a considerable amount more torque due to the added cubic inches.
The 408/402 has it's advatages but thats an additional block you now have to purchase, If you've popped your stock motor and your blocks no good, I'd go 408/402, If my stock blocks fine I'd consider staying 346 or possibly going 383, but I'd probably still end up with the 408/402....
It all comes down to budget, application, and most importantly what do you want out of the car?
Assuming all other components are equal (Compression, Cam size, Heads, etc...) the 408/2 and will almost always make slighly more power and a considerable amount more torque due to the added cubic inches.
The 408/402 has it's advatages but thats an additional block you now have to purchase, If you've popped your stock motor and your blocks no good, I'd go 408/402, If my stock blocks fine I'd consider staying 346 or possibly going 383, but I'd probably still end up with the 408/402....
It all comes down to budget, application, and most importantly what do you want out of the car?
